NEN EN ISO 10297 : 2014 + COR 2014

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Valve design requirements
  4.1 General
  4.2 Description
  4.3 Materials
  4.4 Dimensions
  4.5 Valve connections
  4.6 Mechanical strength
  4.7 Valve operating mechanism
  4.8 Leakage
  4.9 Resistance to ignition
5 Production requirements
  5.1 Manufacturing
  5.2 Cleaning
6 Type test methods
  6.1 General
  6.2 Documentation
  6.3 Number of test samples
  6.4 Test report
  6.5 Ambient conditions
  6.6 Valve test pressure
  6.7 Test gas
  6.8 Test sequence
  6.9 Hydraulic pressure test
  6.10 Excessive torque tests
  6.11 Leak tightness tests
  6.12 Endurance test
  6.13 Flame impingement test
  6.14 Oxygen pressure surge test
  6.15 Acetylene flashback test
7 Marking
Annex A (normative) Valve impact test
Annex B (informative) Example of test sequence
Annex C (normative) Endurance test
Bibliography

Defines design, type testing and marking requirements for: a) cylinder valves intended to be fitted to refillable transportable gas cylinders; b) main valves (excluding ball valves) for cylinder bundles; and c) cylinder valves or main valves with integrated pressure regulator (VIPR); which convey compressed, liquefied or dissolved gases.